1240543332 has 72 divisors (see below), whose sum is σ = 3590193152. Its totient is φ = 353808000.

The previous prime is 1240543327. The next prime is 1240543351. The reversal of 1240543332 is 2333450421.

It is a junction number, because it is equal to n+sod(n) for n = 1240543296 and 1240543305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147357 + ... + 155547.

Almost surely, 2^1240543332 is an apocalyptic number.

1240543332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240543332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1795096576).

1240543332 is an abundant number, since it is smaller than the sum of its proper divisors (2349649820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240543332 is a wasteful number, since it uses less digits than its factorization.

1240543332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809 (or 8804 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1240543332 is about 35221.3476743863. The cubic root of 1240543332 is about 1074.4939625141.

Adding to 1240543332 its reverse (2333450421), we get a palindrome (3573993753).

The spelling of 1240543332 in words is "one billion, two hundred forty million, five hundred forty-three thousand, three hundred thirty-two".